Turnover mechanism



Jan. 19, 1926.

L. J. SCHWAB TURNOVER MECHANISl l Filed March a, 1924 illllll llililllilllliWilli"?! I mmmwmn d k I v i Q Patented Jan. 19, 1926.

UNITED STATES PATENT OFFICE.

LOUIS J. screw-Anon PEORIA, ILLINOIS.

TURNOVER MECHANISM.

Application filed March 8, 1924. Serial No. 697,947.

To (271 whom it may concern Be it known that 1, Lotus J. Somme, a citizen of the United States, a resident of Peoria, in the county of Peoria and State of Illinois, have invented new and useful Improvements in Turnover Mechanisms, of which the following is a specification.

This invention has reference to a turnover mechanism V for handling stacks of sheets, and the object sought is substantially that stated in my Patent, Number 1,486,609, to-wit, to provide operable means for the clamping or base-boards to compress or hold the sheets of paper therebetween; such means permitting rotative movement of the steel? whereby the same may be turned to reverse the position of the sheets of paper.

The invention has for a further object to provide improved coupling members between the clamping and turning means and the baseboards, which comprises preferably board members, which, under clamping action have a frictional gripping relation with the base-boards and are thereby prevented from slipping on the base-boards when a stack of sheets is turned.

A further object of the invention is to provide in the clamping and turning means, a cable lift and support and means acting automatically, as a stack of sheets is turned, to exertan additional clamping action through the cable and connections to the base=boards to insure against any sagging or slippage of the sheets during the turning of the stack.

That the invention may be more fully understood, reference is had to the accompanying drawing forming part of the specification illustrating a preferred embodiment of the invention, in which V V Figure 1 is a front elevation ofa turnover mechanism embodying my invention, the same being shown clamping a stack of sheets preparatory to turning the stack;

Figure 2 isa side elevation of Figure 1;

Figure 3 is a side elevation showing the stack in the act of being turned, the stack having been turned one-quarter the way around Figure 1- is a sectional detail of the clamping and turning means;

Figure is an elevation, in detail of the threaded hooked bar;

Figure 6 is detail, in section, showing a cable guide and clamping means;

Figure .7 is a s d aera n how g one of the friction gripping bars in the coupling, dotted lines illustrating how it operates, and Figure 8 is a detail in plan of one end of a friction gripping bar. I

Like characters of reference denote corresponding parts throughout the figures.

The herein described mechanism is more particularly useful in printing establishments, Base-boards, which are useful as clampsbetweenwhich the sheets of paper are stacked and compressed, are well known, and large presses are equipped with lifting meansfor elevating a ba'se-board and sheets thereon into position at the feedirig-in end of the press, and a similar base-board is placed at the discharge end of the press to receive the sheets as they are printed.

hen a multiplicity of sheets have been printed and stacked on a base-board, a

similar base-board is laid onthe top of the stack, the top and bottom boards being employed as the means for clamping and compressing the sheets into a compact stack. My improved clamping and turning means are then applied, including cables for lift- 7 'ing the stack and on which the stack is turned, means being present to automatically exert an additional clamping action through the cables to insure against the body of sheets sagging or the sheets slipping one on the other as the stack is turned, to reverse the position of the sheets.

For convenience, a stack of sheets is des' ignated A, the same, restingv on a baseboard 1 and capped by a similar base-board 2, between which the sheets A in the stack are clamped, being compressed by the appl ication of power to the boards to firmly and securely holdthe stack of sheets therebetween. These boards are preferably constructed with runners 3 to rest on thefioor and elevating the board above the floor to allow for placing a truck therebeneath so that the board and paper thereon may be trucked from place to place. The boards 1 and 2 are duplicates of each other and are well known and in general use in printing establishments.

Arranged to lie against the base-boards l and 2 and have a frictional impinging rela tion therewith so as to be immovable when clamping action is applied to the sheets A,

1 is preferably provided with lugs 8 ar ranged on either side of the opening 7, provided with aligned openings 9. Through the openings 7 pass elements of coupling members included in the operable connections by means of which pressure is applied to the opposite ends of the boards 1 and 2 to cause the same to firmly clamp the sheets therebetween and to hold the same in compact stack form, whereby the boards and stack of sheets may be moved as a single unit from place to place and the boards and stack of sheets turned, to reverse the position of the sheets.

The board members 4- are formed or pro vided with oppositely inclined surfaces 10 from a common centering or teetering point 11.. These board members are applied to the base-boards 1 and 2 with the points 11 bearing thereagainst and serving asa fulcrum point on which the opposite end portions of such members are moved to bring or force the inclined portions 10 of such members into frictional impinging relation with the surfaces of the base-boards 1 and 2, as exemplified in full and dotted lines in Figure 7. -When such impinging relation has been brought about between the members 1 and the basesboards, the members are frictionally held against sliding move ment, and therefore held against disloc gment when the stack is being turned and thereby prevents disarrangement of the clamping means and sheets.

12 designates threaded bars or rods formed or provided at one end with open hook-members 13. The threaded ends of these bars or rods pass through openings 7 in the plates 5 of the board member 1 normally bearing against the base-board 1 and threaded on to the threaded ends of said bars or rods 12 are saucer shaped nuts 1% which bear against the plates 5 and the flanges 6 thereof. The positions of the hooked-members 13 with relation to the center of the stack of sheets is determined by and through the adjustment of the nuts 1d. 15 designates a preferably flexible cable, to, one end of which is connected. a coupling member 16 having preferably a square opening 17 therethrough. Through said opening 17 is passed a pin 18 which is also passed through the openings 9 in the lugs 8 on the plates 5 secured to the memhere 1- normally lying or hearing against the base-board 2 to position and hold the coupling 16 and the cable passing through the openings 7 in said plates 5. 'The opposite nd o the cable extends to a d may be attached or coupled in any suitable manner to ra s ng e tering means of any s i ble typ Th dy the abl .15 p sse hrough a h be le .9 to hi h. i ec r d an e e aeeted. U; hap d clamp bar 2 on end of hich. is. tested. 2 Provided i h a cable guide 21 and is movable in relation to the other end of said U bar and within a housing 22 formed on or connected thereto, an adjusting and locking screw 33 being provided to lock or clamp the cable and U bar in immovable relation when the cable has been drawn taut at the initial lifting step and when the attendant is ready to turn the stack of sheets clamped between the base-boards 1 and 2. The hub-collar 19 is formed or provided with an annular peripherial groove 23 in which may be seated when coupled, the hooked end 13 of the threaded bar or rod 12. The axial opening through the hub-collar 19, through which the cable 15 passes terminates in preferably oppositely arranged semi-spherical surfaces 24, the normal lower and inside semi-spherical surfaces of which is provided with a radial grooved seat 25 and the normal inner presented face of said hub-collar is preferably formed with outwardly projecting cam surfaces 26.

To disengage and release the operable parts from the base-boards 1 and 2 the cables are slacked which will permit the hooked ends 13 of the threaded bars or rods 12 to be lifted and released from the hub collar 19, when the pin 18 may be removed from the lugs 8 and the coupling member 16 and the cables l fted from the plates 5 and the threaded bars or rods 12 disengaged from their plates 5.

Assuming that the parts are in the assembled relation shown in Figures 1, 2 and 4, with the hub-collars having been adjusted to a position with their axes approximately in axial alignment and approximately centrally between the baseboards 1 and 2 and the cables 15 drawn taut, it is desirable to set the screws 33 locking the cables at the free ends of the U bars, then the lifting mechanism, not shown, may be operated to draw up the cables, which in turn will lift the stack of sheet with the base-boards from oil the floor or other rest and permit the at tendant to rotate the stack and with the stack the short end of the cable leading to the base-board 2 and he threaded bars or rods leading to the base-board 1, the hooker end of said threaded bars or rods 12 turning in the grooves of the hub-collars 19 and the short ends of the cables moving over the cam-surfaces 26 of said hub-collars which funct on to exert an additional pressure through the cables to insure a complete clamping action of the base-boards on the staclt'of sheets as will prevent sagging of the stack or slippage of the sheets in the stack, one upon the other during the turning of the stack and vhen the stack is in the hali turned position shown in Figure On the stack being completely turned over the short ends of the cables s a; themselves in the radial grooved seats 5 of the hub-collars.

Fr-our the foregoing, taken in connection with the accompanying drawings, it is thought the construction, complete: operation and many advantages ofthe invention will bereadilyapparent to those skilledrin the art to whichxthe invention pertains. should also be understood thatychanges in the detail of construction of. parts maybe made without'departing from the invention or the scop'eof the-appended claims.

hat I claim is 1. In a turn-over mechanism for a stack of sheets, the combination with base-boards between which the stack of sheets is compressed, of coacting coupling means arranged for connection with opposite baseboards, including two cables adapted for connection with a raising and lowering means, and means for automatically exerting additional clamping action thru the cables as the stack is turned.

2. In a turn-over mechanism for a stack of sheets, the combination with base-boards between which the stack of sheets is compressed, of coacting coupling means arranged for connection with opposite baseboards, including adjustable members and cables adapted for connection with a raising and lowering means, means to clamp the cables to certain of said coupling means, and means for automatically exerting additional clamping action thru the cables as the stack is turned.

3. In a turn-over mechanism for a stack of sheets, the combination with base-boards between which. the stack of sheets is compressed, of coupling means arranged for connection with opposite base-boards, in-

, eluding a pair of cables, hub-collars having guiding means thru which the cables pass, said collars formed with annular peripheral grooved and cam faces, and threaded bars having hooked ends engagable with and rotatable in the grooves of said collars, the shorter portions of the cables connecting a base-board adapted to ride over the cam-surfaces of the said collars as the stack is turned and thereby exert an additional clamping action thru said cables as the stack is turned.

4. In a turn-over mechanism for a stack of sheets, the combination with base-boards between which the stack of sheets is compressed, of coupling means arranged for connection with opposite base-boards, in cluding a pair of cables, hub-collars having guiding means thru which the cables-pass, said collars formed with annular grooved and cam faces, threaded bars having hooked ends engagable with and rotatable in the grooves of said collars, the shorter portions of the cables connecting a base-board adapted to ride over the cam surfaces of the said collars as the stack is turned and thereby exert an additional clamping action thru. said cables asithe stack V is turned and means to; clamp the cables in said guiding means. r i 5;. An operating: mechanism arranged for connection! withflmembers" between: which inat'criala is--t'o be-compressed and held, com-, prising a grooved collar provided with a radiallyextending. guide, a cable operable thrusaid collar and guideand providedwith a coupling. end arranged for attachment to I one of said members, and a bar having on one end a hook for rotatable connection with the groove of said collar and threaded at its opposite end for adjustable connection with another of said members.

6. An operating mechanism arranged for connection with members between which material is to be compressed and held, comprising a pair of grooved collars provided with radially extending guides, a pair of cables operable thru said collars and guides and provided with coupling ends arranged for attachment to opposite ends of one of said members, and a pair of bars each having on one end a hook for rotatable connection with the grooves of said collars and having oppositely threaded ends arranged for adjustable connection with opposite ends of the other of said members.

7. An operating means for a turn-over mechanism, comprising a pair'of grooved collars having radially arranged guides on one side and cam faces on the other side, a cable passing thru each collar and guide and provided with a coupling end, a pair of bars each having a hooked end arranged for rotative attachment with the groove of a collar and provided with an opposite threaded coupling end, the cam faces of said collars acting to exert additional clamping action thru the cables as they are caused to ride over such cam faces.

8. An operating means for a turn-over mechanism, comprising a pair of grooved collars having radially arranged guides on one side and cam faces on the other side, a cable passing thru each collar and guide and provided with a coupling end, means to clamp the cables in said guides, a pair of bars each having a hooked end arranged for rotative attachment with the groove of a collar and provided with an opposite threaded coupling end, the cam faces of said collars acting to exert additional clamping action thru the cables as they are caused to ride over such cam faces.

9. In an apparatus of the character described, in combination with the base-boards between which a stack of sheets is compressed, of pressure applying means including board like members having oppositely inclined surfaces arranged when pressure is applied to the ends of said members to be brought into firm frictional impinging relation with such base-boards.

10. In an apparatus of the character described in combination with the base-boards between which a stack of sheets is conipressed, a board-like member for each baseboard, said members having oppositely inclined surfaces arranged to be brought into firm frictional impinging relation With said base-boards, an operating means, and means for operatively connecting said operating means with the ends of said members.

11. A clamping means including a boardlike member having one of its surfaces oppositely inclined from an approximately central point to its opposite ends, and means connected with the opposite ends of said 15 member adapted for the connection of a 1 operative means thereto.

In Witness whereof I have hereunto affixed my hand this 5th day of March, 1921.

LOUIS J. SCHWAB. 

